Adjustable forehead support dial for respiratory mask



FIG. 1 is a front perspective view of an adjustable forehead support dial for respiratory mask showing our new design;

FIG. 2 is a reverse perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a left side view thereof.

The broken lines represent environment or structure of the adjustable forehead support dial for respiratory mask and do not form part of the claimed design. 

CLAIM The ornamental design for an adjustable forehead support dial for respiratory mask, as shown and described. 